<!-- Ã¢ï¿½Â¢Ã¢ï¿½Â¢Ã¢ï¿½Â¢ --> allows you to insert comments into an HTML document and have them completely ignored by the browser. This is useful for such things as revision histories and notes about how to improve the document.

For example, this code

<!-- Creation Date: June 21, 1996 -->

<!-- Modifications: -->

<!-- Sep 26, 1996: Added Links to Steve's Page -->

<!-- Oct 10, 1996: Updated product list -->

produces this (nothing):

<!-- Ã¢ï¿½Â¢Ã¢ï¿½Â¢Ã¢ï¿½Â¢ --> will even "comment out" other tags. Everything is commented out until the closing -->. However, commenting out code tends to result in sloppy code. The best use for <!-- Ã¢ï¿½Â¢Ã¢ï¿½Â¢Ã¢ï¿½Â¢ --> in this sense is for experimentation, to try out different code without deleting other attempts. But when the experimentation is done, take out the unused code.